These posts are beginning to get very rude. I have a solution--maybe--to this. Do you know of the 1950's movie THE DAY THE EARTH STOOD STILL? The movie starred Michael Renne as an outerspace visitor who had come to earth to give the planet a dire warning. He was coming in peace, but no one would believe him either. Everyone was out to get him, shoot him or do something terrible to him before he could accomplish his mission.
But no one could stop him. He finally did accomplish his mission--even after someone put a bullet into him and he died. His robot Gort brought him back to life to give his message and then leave again. His message: if you intend to continue on a path of belligerence and distruction and bring it to a peaceful outerspace, your planet will be reduced to a burned out cinder, and it will be your own fault because you lit the torch by which to have it happen.
Enough said? What my message here is trying to say, I guess, in the middle of the movie the spaceman went to visit a professor Barnhardt at his home. The scientist was so awed by the man, yet, he needed proof, too, that the spaceman was who he claimed. A "Little demonstration? But I wouldn't want anyone hurt." The spaceman had the perfect solution to the problem.
What we are all asking here is for that "little demonstration, too, where nobody gets hurt, but it would convince us all that you are who you say you are!"
I would like to see a similar kind of demonstration given that will convince the biggest skeptic on his board there is a time traveler out there who is trying to get a message to us and before we blow ourselves up. Can you do that for us please? I would most grateful, too, if you could tell me what the spaceman's solution was and then copy it as to your specifications from where you have come from! Thanks.